windows service, no documentation, bad examples, how do i use this?

[sacred snow]

extern crate windows_service;

use std::ffi::OsString;
use std::thread;
use std::time::Duration;
use windows_service::service::{
    ServiceControl, ServiceControlAccept, ServiceExitCode, ServiceState, ServiceStatus,
    ServiceType,
};
use windows_service::service_control_handler::{self, ServiceControlHandlerResult};

fn my_service_main(arguments: Vec<OsString>) {
    if let Err(e) = run_service(arguments) {
        println!("{}", e);
    }
}

fn run_service(arguments: Vec<OsString>) -> windows_service::Result<()> {
    let event_handler = move |control_event| -> ServiceControlHandlerResult {
        match control_event {
            ServiceControl::Stop | ServiceControl::Interrogate => {
                ServiceControlHandlerResult::NoError
            }
            _ => ServiceControlHandlerResult::NotImplemented,
        }
    };
    let status_handle = service_control_handler::register("my_service_name", event_handler)?;

    let next_status = ServiceStatus {
        service_type: ServiceType::OWN_PROCESS,
        current_state: ServiceState::Running,
        controls_accepted: ServiceControlAccept::STOP,
        exit_code: ServiceExitCode::Win32(0),
        checkpoint: 0,
        wait_hint: Duration::default(),
        process_id: None,
    };
    status_handle.set_service_status(next_status)?;

    // for i in 0..100000{
    //     println!("{}", i);
    //     thread::sleep(Duration::from_secs(10));
    // }

    Ok(())
}

fn main() {
    let args: Vec<OsString> = std::env::args_os().collect();
    my_service_main(args);
}
}```
from the example in https://docs.rs/windows-service/latest/windows_service/ 
`IO error in winapi call`

[vital ocean]

you're not using the define_windows_service! macro or starting via the service_dispatcher, as in the first example on the page

[sacred snow]

the first example didnt work

[vital ocean]

here's a full example: https://github.com/mullvad/windows-service-rs/blob/main/examples/ping_service.rs

[sacred snow]

no variant or associated item named UserEvent found for enum ServiceControl in the current scope
variant or associated item not found in ServiceControlrustcClick for full compiler diagnostic
main.rs(75, 33): there is a variant with a similar name: PowerEvent

which doesnt compile

[vital ocean]

Anyway, if you just want to run a program in the background, it should be enough with windows_subsystem = "windows"

[sacred snow]

how do i use that

[vital ocean]

add #![windows_subsystem = "windows"] to the top of your main.rs

[vapid terrace]

here it is with the tag of the version that's up on crates.io https://github.com/mullvad/windows-service-rs/blob/v0.6.0/examples/ping_service.rs

[vital ocean]

cheers!

[sacred snow]

#![windows_subsystem = "windows"]
fn main(){
    loop {
        println!("hello world");
    }
}```

[vital ocean]

sure, although you won't be able to see the output anywhere

[sacred snow]

why not

[vital ocean]

because you don't have a console window

[sacred snow]

why

[vital ocean]

because you don't want something that appears in the taskbar??

[sacred snow]

so its doing its thing in the background

[vital ocean]

yes

[sacred snow]

and it can read key inputs?

[vital ocean]

uhh

why do you want to do that

[sacred snow]

macro

[vital ocean]

?crate device_query

[mighty cloud]

device_query

A basic library for querying keyboard and mouse state on-demand without a window.

Version

2.0.0

Downloads

75 273

Feb 9, 2024, 6:38 AM

[sacred snow]

W it works

[vital ocean]

Nice!

you probably want to use some logging crate now to see output heh

[sacred snow]

who needs logging crates when i can just create a txt file

[sacred snow]

can i run cmd commands without opening a terminal?

if its running in the background

[vital ocean]

yes, via std::process::Command

[sacred snow]

w rizz